AMD EPYC 7643 vs Xeon Platinum 8256

VS

AMD EPYC 7643

Intel Xeon Platinum 8256

We compared two server CPUs: AMD EPYC 7643 with 48 cores 2.3GHz and Xeon Platinum 8256 with 4 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 7643 's Advantages

Released 2 years and 3 months late

Higher specification of memory (3200 vs 4)

Larger L3 cache size (256MB vs 16.5MB)

More modern manufacturing process (7nm vs 14nm)

Xeon Platinum 8256 's Advantages

Higher base frequency (3.8GHz vs 2.3GHz)

Lower TDP (105W vs 225W)

Score

Benchmark

Geekbench 6 Single Core

AMD EPYC 7643 +26%

1696

Xeon Platinum 8256

1339

Geekbench 6 Multi Core

AMD EPYC 7643 +69%

9939

Xeon Platinum 8256

5871

AMD EPYC 7643

VS

Xeon Platinum 8256

General Parameters

Mar 2021

Release Date

Dec 2018

AMD

Manufacturer

Intel

Server

Type

Server

Milan

Core Architecture

Cascade Lake-SP

AMD Socket SP3

Socket

Intel Socket 3647

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

Xeon Platinum(Cascade Lake-SP)

Package

33.2 billions

Transistor Count

8 billions

7 nm

Manufacturing Process

14 nm

225 W

Power Consumption

105 W

TSMC

Foundry

Intel

8x81 mm²

Die Size

-

12 nm

I/O Process Size

-

416 mm²

I/O Die Size

-

CPU Performance

2.3 GHz

Performance Core Base Frequency

3.8 GHz

3.6 GHz

Performance Core Turbo Frequency

3.9 GHz

48

Total Core Count

4

96

Total Thread Count

8

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

38.0

64 KB per core

L1 Cache

64 KB per core

512 KB per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

16.5 MB shared

No

Unlocked Multiplier

No

6

Cores per CCD

-

2

SMP

8

Memory Parameters

DDR4-3200

Memory Types

DDR4

8

Max Memory Channels

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

-

128

PCIe Lanes

-

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